These lessons, with videos, examples, and step-by-step solutions, help Algebra II students learn about arithmetic series.

**Related Pages**

Arithmetic Sequences And Series

Number Sequences

More Lessons for Grade 9

Math Worksheets

**What is an Arithmetic Series?**

An arithmetic series is the sum of terms of an arithmetic sequence.

What are the formulas to find the nth partial sum of an arithmetic sequence?

The following diagrams give two formulas to find the Arithmetic Series or the nth partial sum of an arithmetic sequence. Scroll down the page for examples and solutions on how to use the formulas.

Arithmetic Series

Arithmetic Series

This video covers the general formula for arithmetic series

Arithmetic Series page 1

Arithmetic Series page 2

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